Diagnosis of practical insulation systems by partial discharge measurements in the presence of multi-discharge phenomena

Author

Cacciari, M. ; Contin, A. ; Rabach, G. ; Montanari, G.C.

Author_Institution

Trieste Univ., Italy

fYear

1993

fDate

17-20 Oct 1993

Firstpage

414

Lastpage

419

Abstract

The shape analysis of multiple partial-discharge (PD) phenomena is addressed in connection with the representation of the cumulative PD height distribution in a Weibull plot. It is shown that a multiplicatively-Weibull distribution can fit PD data obtained from measurements performed on stator bars when two PD phenomena are superimposed. Pattern identification and clustering is thus achieved, so that each PD phenomenon can be investigated as a function of measurement voltage and aging time. The effectiveness of the Weibull representation as a diagnostic tool is therefore derived

Keywords

Weibull distribution; ageing; charge measurement; insulation testing; partial discharges; Weibull plot; aging time; cumulative PD height distribution; insulation systems; measurement voltage; multi-discharge phenomena; multiplicatively-Weibull distribution; partial discharge measurements; shape analysis; stator bars; Aging; Breakdown voltage; Insulation; Partial discharge measurement; Partial discharges; Performance analysis; Performance evaluation; Pulse measurements; Stator bars; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on

Conference_Location

Pocono Manor, PA

Print_ISBN

0-7803-0966-9

Type

conf

DOI

10.1109/CEIDP.1993.378937

Filename

378937